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Production Quality Assurance Research & Development Test & Measurement NON-CONTACT TEMPERATURE MEASUREMENT PLASTICS INDUSTRY when temperature matters

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Plastics industry ENGINEERING / PHYSICS Influence from the surroundings The illustration shows that the transmissivity of air strongly depends on the wavelength. Strong flattening alternates with areas of high transmissivity – the so-called atmospheric windows. The transmissivity in the long-wave atmospheric window (8 – 14 µm) is constantly high whereas there are measurable extinctions by the atmosphere in the shortwave area, which may lead to false results. Typical measuring windows are 1.1 … 1.7 µm, 2 … 2.5 µm and 3 … 5 µm. Additional influences can arise from heat sources in the...

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when temperature matters Line scan with compact infrared camera for thick plastic films Plastics processors produce a wide range of products of various dimensions, thicknesses, textures, colors and embossed patterns. Here the manufacturing is subject to numerous thermal processes which have to be continually and rigorously checked at various critical points. In order to ensure quality, a high level of temperature homogeneity is required and this is checked at various stages, including during thermoforming and in the calender zone, by means of a line scan. In-depth inspection of preforms...

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Applications of temperature measurement technology PRODUCTION OF PLASTICS The measurement of process, instrument and workpiece temperatures is a crucial factor in production and quality control in the plastics industry. In many areas only non-contact temperature monitoring is possible, and this is where infrared cameras and infrared thermometers are used. Optris offers compact cameras in the long-wave range from €940 and point sensors from €95. Injection molding Flat film and sheet extrusion In flat film and sheet extrusion the molten mass is pressed through a wide slit die and then...

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when temperature matters Blown film extrusion Blown film extrusion Similar to injection molding, the molten mass is pushed out of the extruder – however, in this case not into a die, rather through a die with a ring nozzle. The resulting film tube is then pulled vertically and blown up in the process. During this process air is used to cool the tube both inside and out. Infrared thermometer From the moment the molten mass emerges from the nozzle, the temperature of the film tube needs to be measured at various points in order to ensure the characteristics and quality of the product....

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Plastics industry INFRARED CAMERAS AND INFRARED THERMOMETERS The optris CT P3 infrared thermometer, with its extremely narrow-band spectral range of 3.43 µm, is particularly suited to the temperature measurement of very thin plastic materials such as PE, PP and PS. optris CT P3 The temperature range extends from 50 to 400 °C with a machine response time of 100 ms. The sensing head can withstand temperatures of up to 75 °C without additional cooling. The film thermometer‘s separate electronics box is equipped with easy-to-access programming buttons and a backlit LCD display. The innovative...

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when temperature matters The infrared cameras in the optris PI series and Xi series are fixed thermography systems that offer outstanding value for money. In the plastics industry the LT cameras (8-14 µm) are used for molding or film thicknesses of over 0.4 mm. The thermal imaging cameras are connected to a computer via USB 2.0 or integrated into a PLC and are ready to use immediately after connecting. optris PI series – Precision Line optris Xi series – Compact Line The optris PI 400i / 450i (382 x 288 px) impresses with its high thermal sensitivity from 40 mK. The Xi series is a fusion of...

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Optris worldwide OUR INTERNATIONAL SALES PARTNERS YOU CAN FIND US HERE Our capable local distributors can help you to choose the most suitable devices for your individual applications. Specifications are subject to change without notice · Temperature measurement plastics industry-BR-EN2020-04-B Find the right contact: www.optris.global/sales-support Optris GmbH Ferdinand-Buisson-Str. 14 13127 Berlin · Germany when temperature matters

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